It short and sweet with some great views along the way - not to mention, it's really close to our house, so it makes for a fun trip out of our apartment.
I've been here countless amounts of times, and I'll still go countless more.
How to get there: Pretty simple. Head up Manoa road and you'll run right into the trailhead and a parking lot. A small tip though - park in front of one of the houses down the street before you get to the parking lot. Parking is $5, and I'd rather just walk a couple more blocks than pay every time.
If you have more time: when you get to the falls, there is another small marked trail that goes on for another 3 miles or so (it will be on your left if you're facing the falls). We've never made it to the end, but it's a fun trail with lots of bamboo.